Elaborate engineering services for
an imposing dam
The Foz Tua Dam and the associated pumped-storage
power station under construction in northern Portugal will
reach a height of 108 m, while the dam crest measures 275
From a formwork perspective, the particular challenge
is caused through the complex design of the double curva-
ture reinforced concrete structure with the 5 m wide dam
crest and its integrated overflow mechanism.
The hydraulic circuit covers over 700 m along the right-
hand bank of the river and includes 2 independent tunnels,
as well as the subterranean power station with 2 reversible
Peri devised and supplied an optimised and safe form-
work and scaffolding solution for works. The main contrac-
tor is Barragem de Foz Tua, ACE.
Material And Support From One
With a complex project of this size, the issue is to coordi-
nate the diverse requirements of the build especially with
a tight schedule and high material requirements.
In addition to planning the formwork and scaffold-
ing solution for complex geometries and high loads, one
of the biggest challenges is strict compliance with the
construction phase and cost plan for the gigantic dam
To support the build Peri deploys a Project Manager
to the construction site, who acts as liaison between
the Technical Office and the construction team.
All processes relating to planning, logistics and
formwork assembly are scheduled in detail by the
Project Manager and coordinated in depth with the actual
The Formwork And Scaffolding
Peri’s engineers devised a solution of the SCS Climbing
System and the VARIO GT 24 Wall Formwork for the double
This combination is the ideal solution for the massive
dam, as it facilitates both the single-face load transfer and
the high finish requirements.
SCS enables single-face concreting by transferring the
loads from the fresh concrete pressure without formwork
anchors through the bracket into the climbing anchor of
the previous concreting step.
Because of the modular concept with multi-piece
brackets, the SCS Climbing System can easily be adapted to
the structural geometry.
Large climbing units are possible due to the special load